Selecting the Right Tool For the Job
Edges and Surfaces
It's important to consider the edges and surfaces of the handles of tools you want to use. Be sure to check the following.
Select a tool without sharp edges or finger grooves on the handle. Tool handles coated with a soft material provide good grip. See Example
Orientation
It's also important to determine if it's necessary to orient the tool vertically or horizontally. Tools with bent handles are better when the force is applied horizontally (in the same direction as your straight forearm and wrist). Tools with straight handles are better when the force is applied vertically. See Examples
Handle Width
For tasks requiring high force, select a tool with a handle length longer than the widest part of your hand-usually 4 inches to 6 inches. You can prevent contact pressure by making sure the end of the handle does not press on the nerves and blood vessels in the palm of your hand. If the handle is too short, the end will press against the palm of your hand and may cause an injury. See Examples
Tool Slippage
Select a tool that has a non-slip surface for a better grip. Adding a sleeve to the tool improves the surface texture of the handle. To prevent tool slippage within the sleeve, make sure that the sleeve fits snugly during use. Remember, a sleeve always increases the diameter or the grip span of the handle. See Examples
Knowledge Check Choose the best answer for the question.
2-5. Why does a tool handle cause harmful contact pressure on nerves in the palm of your hand?
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